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Hexavalent chromium is widespread in North Carolina wells but not linked to coal ash -- Sciellag➢di1yf 4 <br /> 3 <br /> SciE .flc:eD ail'I <br /> Your source for the latest research news <br /> Hexavalent chromium is widespread in North Carolina wells <br /> but not linked to coal ash <br /> Date: October 26, 2016 <br /> Source: Duke University <br /> Summary: Hexavalent chromium, a carcinogen made famous by the movie Erin Brockovich, is far <br /> more abundant in drinking water wells in North Carolina than previously thought, a new <br /> study finds. <br /> FULL STORY <br /> 0100111111111111111111111111111 ' w.. Groundwater testing revealed that nine out of ten <br /> 11111111111111111111111111111111111111111111111111111111111111111111111111111 1111111 11111111111H, 1111101 drinking water wells in North Carolinas Piedmont II II <br /> � d� y ' region contain detectable levels of the carcinogen <br /> hexavalent chromium, and that the contamination <br /> �, �� stems from natural sources. <br /> „ ��ti''",�� � Credit:Avner Vengosh, Duke University <br /> 11140,)„, 1111,11111111111111„,„„„„1 <br /> 11 11 11101mo <br /> Ih11111111111111111 11,1111 <br /> Hexavalent chromium, a carcinogen made famous by the movie Erin <br /> Brockovich, is far more abundant in drinking water wells in North Carolina than <br /> previously thought, a new Duke University study finds. <br /> The contamination doesn't, however, stem from leaking coal ash ponds as many people feared after <br /> state officials tested wells near coal plants last year and detected potentially harmful levels of <br /> hexavalent chromium in the water. <br /> Instead, its caused by the natural leaching of mostly volcanic rocks in aquifers across the Piedmont <br /> region. <br /> "About 90 percent of the wells we sampled had detectable levels of hexavalent chromium, and in many <br /> cases the contamination is well above recommended levels for safe drinking water. But our analysis <br /> clearly shows it is derived from natural sources, not coal ash," said Avner Vengosh, professor of <br /> geochemistry and water quality at Duke's Nicholas School of the Environment. <br /> https://www.sciencedaily.com/releases/2016/10/161026111400.htm 12/16/2016 <br />